More than 220,000 people supported her demand to make online abuse a criminal offence after she flagged up trolling about her son Harvey’s disabilities.
Now MPs on the Petitions Committee want the government to give disabled people protection under hate crime laws.
Internet giants must also “accept responsibility” over abuse, they said.
“Social media is rife with horrendous, degrading and dehumanising comments about people with disabilities,” said Helen Jones, who chairs the committee.
“The law on online abuse is not fit for purpose and it is truly shameful that disabled people have been forced off social media while their abusers face no consequences.”
The committee launched an inquiry in response to the petition, which was closed early due to the 2017 general election.
Reality TV star Ms Price, a mother-of-five, told the MPs in evidence that “the most horrific things” had been said about 16-year-old Harvey, who is partially blind, autistic and has the genetic disorder Prader-Willi syndrome.
“They know he hasn’t got a voice back and they mock him more… they find him an easy target,” she said in February last year.